Nephrons are the filtration units in the kidneys responsible for filtering waste products from the blood and producing urine. They selectively re-absorb substances like glucose, amino acids, salts, and water from the initial filtrate as urine flows through the tubules.
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Nephrons are the functional units of the kidneys, responsible for the filtration, reabsorption, and secretion processes essential for maintaining homeostasis. Each kidney contains approximately one million nephrons. A nephron consists of a renal corpuscle, comprising a glomerulus and Bowman’s capsule, connected to a renal tubule. The glomerulus filters blood, producing a fluid called filtrate. The renal tubule processes this filtrate through reabsorption of essential substances and secretion of waste products. The final product, urine, is formed as the processed filtrate moves through the tubule. Nephrons play a crucial role in regulating water balance, electrolyte concentrations, and waste elimination in the kidneys.